Service difficulty report · Floorbeam · Boeing 747121

Difficulty date
July 23, 2005
Submitted
August 5, 2005
Operation
Air carrier
Aircraft
N683UP
Make and model
Boeing 747121
Aircraft serial
20353
Aircraft time
87,225 hours, 21,374 cycles
Part
Floorbeam
Condition
Corroded
Location
Fwd Cargo
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FWD CARGO RT STA 800 RBL 33 FLOORBEAM UPPER CHORD FOUND CORRODED AND CRACKED. CORROSION BLEND OUT 0.080" BY 1" BY 2.5" EXCEED SRM 53-10-01 FIG 1 LIMITS, FLOORBEAM REPAIRED AT BS 800 RBL 26 TO RBL 42" AREA AS PER SRM 51-40-04 FIG 2.